I have the same problem. Setting up a shared folder on a Windows 2003 Standard Server machine. The XP client fails to find the share when attempting to map a network drive. The XP machine also fails to see the 2003 machine in My Network Places. I can ping the 2003 machine, the router, and the DNS server which is at the ISP. I can connect to the 2003 machine via Remote Desktop. I can connect to the XP machine from the 2003 machine. Any further suggestions would be appreciated. Thanks. B)